:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --secondary: #10b981;
    --dark: #1f2937;
    --gray: #6b7280;
    --light-gray: #f3f4f6;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.logo img {
    border-radius: 10px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
}

.cart-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cart-count {
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    padding: 0.125rem 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.burger {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.burger span {
    width: 25px;
    height: 3px;
    background: var(--dark);
    border-radius: 3px;
    transition: var(--transition);
}

.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 6rem 0;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.btn-3d {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--secondary);
    color: var(--white);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1.1rem;
    border: none;
    cursor: pointer;
    box-shadow: 0 8px 15px rgba(16, 185, 129, 0.3);
    transition: var(--transition);
    animation: fadeInUp 1s ease 0.4s backwards;
}

.btn-3d:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 20px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
    background: var(--gray);
    box-shadow: 0 8px 15px rgba(107, 114, 128, 0.3);
}

.advantages {
    padding: 5rem 0;
    background: var(--light-gray);
}

.advantages h2,
.about-courses h2,
.fun-facts h2,
.courses h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.advantage-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.advantage-card i {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.advantage-card h3 {
    margin-bottom: 1rem;
    color: var(--dark);
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    display: block;
    color: var(--gray);
    font-size: 1.1rem;
}

.about-courses {
    padding: 5rem 0;
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: justify;
}

.about-content p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--dark);
}

.fun-facts {
    padding: 5rem 0;
    background: var(--light-gray);
}

.facts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.fact-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.fact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.fact-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    text-align: center;
    line-height: 50px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.fact-card h3 {
    margin-bottom: 1rem;
    color: var(--dark);
}

.courses {
    padding: 5rem 0;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.course-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.course-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.course-content {
    padding: 1.5rem;
}

.course-content h3 {
    margin-bottom: 1rem;
    color: var(--dark);
}

.course-content p {
    color: var(--gray);
    margin-bottom: 1rem;
}

.course-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--gray);
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.product-detail {
    padding: 5rem 0;
}

.product-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
}

.product-image {
    width: 100%;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.product-info h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.product-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.product-description {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--gray);
}

.product-features {
    background: var(--light-gray);
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
}

.product-features h3 {
    margin-bottom: 1rem;
    color: var(--dark);
}

.product-features ul {
    list-style: none;
}

.product-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: 700;
}

.product-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.cart-container {
    padding: 5rem 0;
    min-height: 60vh;
}

.cart-empty {
    text-align: center;
    padding: 4rem 0;
}

.cart-empty i {
    font-size: 5rem;
    color: var(--gray);
    margin-bottom: 1rem;
}

.cart-empty h2 {
    margin-bottom: 1rem;
    color: var(--dark);
}

.cart-items {
    margin-bottom: 2rem;
}

.cart-item {
    display: grid;
    grid-template-columns: 100px 1fr auto;
    gap: 1.5rem;
    align-items: center;
    background: var(--white);
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
}

.cart-item img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 10px;
}

.cart-item-info h3 {
    margin-bottom: 0.5rem;
}

.cart-item-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

.remove-item {
    background: #ef4444;
    color: var(--white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.remove-item:hover {
    background: #dc2626;
}

.cart-summary {
    background: var(--light-gray);
    padding: 2rem;
    border-radius: 15px;
    max-width: 400px;
    margin-left: auto;
}

.cart-summary h2 {
    margin-bottom: 1rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.summary-row.total {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    border-top: 2px solid var(--gray);
    padding-top: 1rem;
    margin-top: 1rem;
}

.checkout-form {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--light-gray);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.success-container {
    padding: 5rem 0;
    text-align: center;
}

.success-icon {
    width: 100px;
    height: 100px;
    background: var(--secondary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    font-size: 3rem;
}

.success-container h1 {
    margin-bottom: 1rem;
    color: var(--dark);
}

.success-container p {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 1rem;
}

.contact-page,
.about-page,
.blog-page {
    padding: 5rem 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-info-card {
    background: var(--light-gray);
    padding: 2rem;
    border-radius: 15px;
}

.contact-info-card h3 {
    margin-bottom: 2rem;
    color: var(--dark);
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary);
    min-width: 30px;
}

.contact-item h4 {
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.about-hero {
    text-align: center;
    margin-bottom: 4rem;
}

.about-hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.about-hero p {
    font-size: 1.25rem;
    color: var(--gray);
}

.about-content-section {
    max-width: 900px;
    margin: 0 auto 3rem;
}

.about-content-section h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.about-content-section p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--gray);
    text-align: justify;
}

.team-section {
    padding: 4rem 0;
    background: var(--light-gray);
    margin-top: 3rem;
    border-radius: 15px;
}

.team-section h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.team-member {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.team-member img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
}

.team-member h3 {
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.team-member .role {
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 1rem;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.blog-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.blog-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.blog-card-content {
    padding: 2rem;
}

.blog-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--gray);
}

.blog-card h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.blog-card h2 a {
    color: var(--dark);
    text-decoration: none;
    transition: var(--transition);
}

.blog-card h2 a:hover {
    color: var(--primary);
}

.blog-card p {
    color: var(--gray);
    margin-bottom: 1rem;
}

.read-more {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.read-more:hover {
    color: var(--primary-dark);
}

.blog-post {
    padding: 5rem 0;
}

.post-header {
    max-width: 900px;
    margin: 0 auto 3rem;
}

.post-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.post-meta {
    display: flex;
    gap: 2rem;
    color: var(--gray);
    flex-wrap: wrap;
}

.post-image {
    width: 100%;
    max-width: 900px;
    margin: 0 auto 3rem;
    display: block;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.post-content {
    max-width: 900px;
    margin: 0 auto;
}

.post-content h2 {
    font-size: 2rem;
    margin: 2.5rem 0 1.5rem;
    color: var(--dark);
}

.post-content p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--gray);
    text-align: justify;
}

.post-footer {
    max-width: 900px;
    margin: 3rem auto;
    padding-top: 2rem;
    border-top: 2px solid var(--light-gray);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.post-tags {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.post-tags a {
    background: var(--light-gray);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    color: var(--dark);
    text-decoration: none;
    transition: var(--transition);
}

.post-tags a:hover {
    background: var(--primary);
    color: var(--white);
}

.post-share {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.share-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--light-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark);
    text-decoration: none;
    transition: var(--transition);
}

.share-btn:hover {
    background: var(--primary);
    color: var(--white);
}

.related-posts {
    max-width: 1200px;
    margin: 4rem auto 0;
}

.related-posts h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--dark);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.related-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    text-decoration: none;
    transition: var(--transition);
}

.related-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.related-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.related-card h4 {
    padding: 1.5rem;
    color: var(--dark);
}

.footer {
    background: var(--dark);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.75rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--white);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
}

.contact-info li {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
}

.contact-info i {
    color: var(--primary);
    margin-top: 3px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

.cookie-consent {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    max-width: 500px;
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-hover);
    z-index: 9999;
    display: none;
}

.cookie-consent.show {
    display: block;
    animation: slideInUp 0.5s ease;
}

.cookie-content p {
    margin-bottom: 1rem;
}

.cookie-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    background: var(--secondary);
    color: var(--white);
    padding: 1rem 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow-hover);
    z-index: 9999;
    opacity: 0;
    transform: translateX(400px);
    transition: var(--transition);
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .burger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem;
        gap: 1rem;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .product-container,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .cart-item {
        grid-template-columns: 80px 1fr;
    }

    .cart-item img {
        width: 80px;
        height: 80px;
    }

    .remove-item {
        grid-column: 1 / -1;
        justify-self: stretch;
    }

    .about-hero h1 {
        font-size: 2rem;
    }

    .post-header h1 {
        font-size: 1.75rem;
    }

    .cookie-consent {
        left: 10px;
        right: 10px;
        bottom: 10px;
    }
}